Water seal for use with crushing machinery



Sept. 15, 1936. H, A JACQBSON 2,054,323- wATEE SEAL Fon UsE w1TE"'cRUsH1NG MACHINERY y Filed Nov. 27, 1953 I Patented Sept. 15, 1936 UNITEDSTATES PATENT OFFICE WATER SEAL FOR USE WITH CRUSHING MACHINERYApplication November 27, 1933, Serial No. 699,916

11 Claims.

My invention relates to an improvement in sealing means and shown hereinas applied to sealing or protecting the main supporting bearing of thehead of a gyratory cone Crusher. It will be understood, however, that itmay be applied to a variety of mechanisms and for a variety of purposes.One proposition is the provision of improved means for preventing theaccess of dust, dirt, grit or the like to an enclosed bearing. Anotherobject, in relation to the specific application of the invention shownin the present specication is the prevention of access of foreignmaterial to the main supporting bearing of a gyratory cone crusher.Other objects will appear from time to time in the course of thespecification and claims.

I illustrate my invention more or less diagrammatcally in theaccompanying drawing, which represents a vertical axial section througha gyratory cone crusher with my invention applied thereto.

Referring to the drawing, A generally indicates any suitable base orsupport of masonry, concrete or the like.

Mounted upon the base A is the main frame B having bottom flange B1,which may be bolted or otherwise secured to the base A. The main frame Bis provided with an upper flange Bs and is formed at one side with apenetrating sleeve B2. Supported upon and spaced generally centrallyWithin the main frame B is a central vertical sleeve B3. It may beoutwardly enlarged or extended at its upper end as at B4. It may beconnected to the frame B by generally radial spider members B5.

Mounted within the sleeve B2 in any suitable manner is a bearingsleeveC, in which is rotatably mounted drive shaft C1, which may be driven asby the pulley C2. It terminates at its inner end in the pinion C3 inmesh with the bevel gear C4, which in turn is keyed to the eccentricallyapertured shaft C5 which rotates within a bushing C6 in the sleeve B3.

Mounted within the eccentric aperture Crl of the shaft C5 is a bushingC3, in which rotates a shaft D, at the upper end of which is mounted thecrushing head D1. This head D1 has a lower spherical bearing surfaceindicated at D2. It rests upon the correspondingly surfaced bearingplate D3, which in turn is mounted upon a cover plate D4, which isseated upon the upper outer edge of the enlargement B4 of the centralvertical sleeve B3. It will be understood that in response to rotationof the shaft C1, the eccentric shaft C5 is rotated through the pinion C3and the gear C4.

The rotation of the shaft C5 rotates the aperture n in which is seatedthe shaft D. This rotation imparts a gyratory movement to the head D1.In the course of this movement the head seats upon and moves upon thespherical bearing formed by the member D3. The parts are so proportionedthat the head D1 acts as if it were suspended at the point indicated asX above the top of the head proper. It will be noted also that the headD1 has an umbrella-like extension D5, which is down turned as at D6 andextends downwardly about the cover plate D4.

In order to protect' the bearing'formed by the opposed surfaces D2 andD3, I provide the following structure. E indicates a circumferentialsump formed inthe cover plate D4. The sump is bounded inwardly by theupwardly and outwardly inclined face El of the plate D4. It is boundedexteriorly by the upward and inward extension E2. Positioned between thetwo is an additional upward extension E3 of less height than E1 or E2.Extending downwardly into the space between E1 and E3 is the skirt E4,the upper edge of which is shown as secured tothe head D1, the loweredge of which is at all times and' at all positions of the head belowthe plane dened by the upper edge of the member E3. This will be clearfrom the drawing since the skirt E4 is at the left side of the drawingshown in its highest position. In

order to maintain a liquid seal, I keep the space between the members E1and YE3 at all times filled with a liquid, for example, water. To obtainthis result, I employ a water supply pipe G extending from any suitablesource of `water to a circumferential supply pipe G1 positioned at aboutthe level of the upper edge of the partition E3. The circulation of thewater is indicated in arrows in the drawing and the water is so suppliedas to keep at all times a liquid seal for the lower edge f the memberE4. Under many circumstances it may be preferable to maintain acirculation of Water over the lip or upper edge of the partition E3. Thearrows indicate the direction of this circulation and it is advantageousin that any foreign matter, dust or the like, which reaches the surfaceof the water is carried off by this circulation. E5 is any suitableoverflow pipe for this water, one or more of such pipes being used, thepipe or pipes being in communication with the gutter E6 between themembers E2 and E3.

It will be observed from the drawing that the lower portion of themember E4, that portion which penetrates the liquid E, is formedconcentrically with the spherical bearing surface or member D3. Thepurpose of this is to prevent any displacement of the liquid in responseto the movement of the member E4, to prevent the member or skirt E4 fromthrowing fluid out of the sump or causing an agitation thereof whichwould prevent the normal trickle or flow of the fluid over the lip E3.It will be observed, from the right hand of the figure, that even whenthe head is at its lowest the generally vertical portion of the memberE4 does not penetrate the uid, the fluid being penetrated only by theinturned spherical lower edge portion.

The bearing D3 may be supplied by oil in any suitable manner as, forexample, by an oil passage Hlv extending axially up the shaft D, and apassage or passages H1 extending through the head to supply oil to theopposed surfaces of D2 I may nd it desirable toprevent the escape of anyof this oil over the edge of the bearing D3. I indicate for example acircumferential oil groove H2 formed in the member D3, whichcommunicates as by the oil passages H3 with the space below the coverD4. The oil isV to be wiped off the bearing face D2 and is returnedthrough the oil passage or passages H3 to the inside of the machine andhence back to whatever oil reservoir is employed. I'hus no oil ispermitted to escape over the edge of the bearing D3 to be carried offand wasted with the water in the drain pipe. Any suitable means may beemployed, to be understood, for maintaining the oil circulation and forcleaning the oil.

Any suitable crushing member or mantle J is mounted upon the head D1.The details of this mantle and of the mounting therefor are not shown,since they do not of themselves form part of the present invention. Thecrushing surface of the mantle J is opposed to a concave or bowl linerJ1, which is mounted on anyV suitable bowl structure J2, which in turnis provided with a circumferential ange J3 adapted to seat upon theflange B1 of the main frame. J4 indicates springs adapted normally tohold the bowl fixed in relation to the main frame B.Y

It will be lrealized that whereas I have described and shown a practicaland operative device, nevertheless many changes may be made in size,shape, number and disposition of parts without departing from the spiritof my invention. I therefore wish my drawing and description to be takenas in a broad sense illustrative or diagrammatic rather than as limitingme to the precise structure herein described and shown.

Y For instance, whereas I show it as applied to a gyratory cone crusher,it will be realized that a similar seal may be applied to other typesofV crushers or to entirely different structures `where it is necessaryto protect an inner bearthe head D1 is gyrated upon the sphericalsurface bearing D3. If the crusher is employed to crush rock, it will beunderstood that finely divided particles, dust and grit ll the air aboutthe crusher. It is in the highest degree important that such material bedenied access to the bearing surface, as otherwise the bearing willrapidly burn out. The present inventionis one solution of this problem.

The direct access of any large particles is made diflicult by thetortuous passage formed by the overhanging umbrella D5 D6, and theinterpenetrating partitions E2, E4 and E1. In addition to this tortuouspassage I provide a positive water seal which always overlaps the loweredge of the skirt E4. Not merely do I provide a water seal, but I maymaintain a positive outward circulation of water which carries off,preferably outwardly, anyv dust or grit which reaches the surface of thewater in the sump E. A tortuous passage and the Water seal and thecirculation of the water combine to deny the access of outside dirt orgrit to the bearing surface. It is further advantageous, in order toprevent oil Wastage, that no oil be allowed to ow over the outer edge ofthe bearing D3. I therefore provide the circumferential oil wipingpasages H2, whereby the oil which would otherwise escape over the edgeof the bearing D3 is allowed to pass down the passages H3 to theinterior of the machine, Where it returns to the general oil circulationsystem of the device. It will be understood that any suitable means areemployed for maintaining a closed circulation of the oil, the oil beingfiltered or purified in any suitable manner.

I claim: Y

l. In a gyratory crusher, a crushing head and means for gyrating it, aspherical support for said head, said head and support being providedwith opposed spherical bearings, means for supplying oil to said opposedbearings, means for withdrawing oil from said bearings adjacent theperiphery thereof, a sump extending outwardly about said bearings, anapron normally fixed in relation to said head forrpenetrating said sump,means for supplying a flow of liquid to said sump within said apron, anoverflow lip in `said sump outside of said apron and extendingcircumferentially thereabout, gutter means positioned Without saidoverfiow lip, and an exhaust passage for drawing off liquid from saidgutter means, the above described system of circulation through the sumpbeing independent of the means for supplying oil and withdrawing oilfrom the spherical bearings, the level of liquid in the sump beingdefined by the overflow lip and being sufficiently high at al1 times tooverlap the lower edge of the apron, and an upwardly extending baillewall which extends upwardly about the sump and overlaps and closelyapproaches the apron.

2. In a gyratory crusher, a crushing head and means for gyrating it, asupport for said head, head and support being provided with opposedbearings, means for supplying oil to said opposed bearings, meansY forwithdrawing oil from said bearings, a sump extending outwardly aboutsaid bearings, an apron, normally fixed in relationV to said head,adapted to penetrate said sump, means for supplying a flow of liquid tosaid sump, an overflow lip in said sump, outside of said apron,extending -circumferentially thereabout, the effective overflow level ofsaid lip being lower than the level of the bearings, gutter meanspositioned without said overflow lip, and exhaust passage means fordrawing off liquid from said gutter means, the above described system ofcirculation through the sump being independent of the means forsupplying oil and withdrawing oil from the bearings, the level of liquidin the sump being dened by the overflow lip and being suflioiently highat all times to overlap the lower edge of the apron at vall positions ofthe apron.

3. In a gyratory crusher, a crushing head and means for gyrating it,bearing means for said head, and means for protecting said bearing meansfrom dust, including a sump formed in the head support, an apron,normally fixed in relation to said head, adapted to penetrate said sump,means for supplying a flow of liquid to said sump, an overflow lip insaid sump, extending circumferentially thereabout, gutter meanspositioned without said overflow lip, and exhaust passage means forcarrying off said liquid from said gutter means, the level of liquid inthe sump being defined by the overflow lip, and being sufciently high atall times to overlap the lower edge of the apron at all positions of theapron, but being lower than the level of the adjacent portion of thebearings.

4. In a gyratory crusher, a crushing head and means for gyrating it,bearing means for said head and means for supplying oil thereto, andmeans, independent of said oiling means, for limiting the access of dustto said bearing means, including a sump, an apron on said head,penetrating said sump, a discharge lip, surrounding and positionedoutwardly of said apron and out of contact with said apron at all times,an inner wall for said sump extending substantially above the horizontalplane of said discharge lip, and adapted to prevent access of the liquidto the bearing means, means for delivering a liquid to said sump at apoint within the periphery of said apron, and for thereby causing acirculation of said liquid outwardly about the lower edge of said apronand over said discharge lip, the lower edge of said apron being at alltimes below the horizontal plane of the discharge lip, and run-ofiumeans for the liquid escaping over the discharge lip.

5. In a gyratory crusher, a crushing head and means for gyrating it,bearing means for said head and means for supplying oil thereto, andmeans, independent of said oiling means, for limiting the access of dustto said bearing means, including a sump, an apron on said head,penetrating said sump, a discharge lip, surrounding and positionedoutwardly of said apron and out of contact with said apron at all times,an inner wall for said sump extending substantially above the horizontalplane of said discharge lip and substantially overhanging the sump andthe liquid therein, and adapted to prevent access of the liquid to thebearing means, means for delivering a liquid to said sump at a pointwithin the periphery of said apron, and for thereby causing acirculation of said liquid outwardly about the lower edge of said apronand over said discharge lip, the lower edge of said apron being at alltimes below the horizontal plane of the discharge lip, and run-ofi meansfor the liquid escaping over the discharge lip.

6. In a gyratory crusher, a crushing head and means for gyrating it,bearing means for said head and means for supplying oil thereto, andmeans, independent of said oiling means, for limiting the access of dustto said bearing means, including a sump, an apron on said head,penetrating said sump, a discharge lip, surrounding and positionedoutwardly of said apron and out of contact with said apron at all times,an inner wall for said sump extending substantially above the horizontalplane of said discharge lip, and adapted to prevent access of the liquidto the bearing means, means for delivering a liquid to said sump at apoint within the periphery of said apron, and for thereby causing acirculation of said liquid outwardly about the lower edge of said apronand over said discharge lip, the lower edge of said apron being at alltimes below the horizontal plane of the discharge lip, and runoff meansfor the liquid escaping over the discharge lip, and a shield, positionedoutwardly of said apron, but out of contact therewith, said shieldoverlying the run-off means and the discharge lip.

7. In a gyratory crusher, a crushing head and means for gyrating it,stationary bearing means for said head and means for supplying oilthereto, and means, independent of said oiling means, for limiting theaccess of dust to said bearing means, including a portion of saidstationary bearing means, a sump, a discharge lip, means for deliveringa liquid to said sump, and for causing a constant flow of liquid overthe edge of said discharge lip, a circumferential, imperforate apron,mounted on the head, and extending downwardly into the sump to a levelbelow the plane dei-ined by the surface of the water and the dischargelip, at all positions of the head, and run off means for the liquidescaping over the discharge lip, adapted to guide said liquid along apath separated from the bearing means.

8. In a gyratory crusher, a crushing head and means for gyrating it,bearing means for said head and means for supplying oil thereto, andmeans, independent of said oiling means, for limiting the access of dustto said bearing means, including a sump, a discharge lip, means fordelivering a liquid to said sump, and for causing a constant flow ofliquid over the edge of said discharge lip, a circumferential,imperforate apron, mounted on the head, and extending downwardly intothe sump to a level below the plane defined by the surface of the waterand the discharge lip, at all positions of the head, and run off meansfor the liquid escaping over the discharge lip, adapted to guide saidliquid along a path separated from the bearing means, said apronterminating in a lower portion generally concentric with the center ofgyration of the head, said concentric portion of the apron intersectingthe surface of the liquid at all positions of the head.

9. In a gyratory crusher, a head mounted for movement about apredetermined center, supporting means for said head, and a seal forsaid supporting means including a sump, a body of liquid in said sump,and an apron, depending from said head and penetrating said sump, saidapron including a spherical portion generally concentric with the centerof movement of the head, said spherical portion at all timesintersecting the surface of the liquid, at all normal crushing positionsof the head.

10. In a gyratory crusher, a head mounted for movement about apredetermined center, supporting means for said head, and a seal forsaid supporting means including a sump, a body of liquid in said sump,and an apron, depending from said head and penetrating said sump, saidapron including a spherical portion generally concentric with the centerof movement of the head, and a circumferential generally verticalportion, from the lower edge of which the spherical portion inwardlyextends, said spherical portion at all times intersecting the surface ofthe liquid, at all normal crushing positions of the head.

11. In a gyratory crusher, a head mounted for gyratory movement about apredetermined center, supporting means for said head including agenerally spherical bearing surface, and a seal for said supportingmeans including a sump, a body of liquid in said sump, and an aprondepending from said head and penetrating said sump, said apron includinga portion generally parallel to said spherical bearing surface andconcentric with the center of movement of the head, said parallelportion of the apron intersecting the surface of the liquid at allnormal crushing positions of the head.

HENRY A. JACOBSON.

